Its a challenge
1st as said remember that water is inherently clear, the color you see comes from reflections.... sky light blue water shades of blue, your reflected fairy perhaps using translucents distorted left and right, try this paint your a quick trial background then do say a moonlight beam across your water as you are doing so take a damp cloth or brush and pull the paint distorting left go a little further and distort right, your waves or nothing more than light and shadow, ,, just as you shade a face using a slightly darker shade of your base you create your valleys in your wave, and just as you highlight the tip of a nose with a lighter shade of your base your crests are highlighted,
What is causing the wave,,, a rock then do so in a circle working out from impact, the wind, follow the direction of the wind,,,,, remember match your distortion to the direction of your waves,